2V0-620 · Question #100
During an upgrade, the ESXi 6.x installer finds an existing version of ESXi and a VMFS3 volume. No virtual machines exist on the host or VMFS3 volume. The requirement is to upgrade to VMFS5. Which…
The correct answer is C. Install ESXi and overwrite the VMFS datastore. Since no virtual machines or data exist on the VMFS3 volume, the administrator can safely overwrite it. A fresh install with overwrite creates a native VMFS5 datastore, which is the proper way to meet the VMFS5 requirement.
Question
During an upgrade, the ESXi 6.x installer finds an existing version of ESXi and a VMFS3 volume. No virtual machines exist on the host or VMFS3 volume. The requirement is to upgrade to VMFS5. Which option should be chosen to meet this requirement?
Options
- AUpgrade ESXi and preserve the VMFS datastore
- BInstall ESXi and preserve the VMFS datastore
- CInstall ESXi and overwrite the VMFS datastore
- DUpgrade ESXi and overwrite the VMFS datastore
How the community answered
(30 responses)- A7% (2)
- B3% (1)
- C83% (25)
- D7% (2)
Why each option
Since no virtual machines or data exist on the VMFS3 volume, the administrator can safely overwrite it. A fresh install with overwrite creates a native VMFS5 datastore, which is the proper way to meet the VMFS5 requirement.
Upgrading ESXi and preserving the VMFS datastore leaves the VMFS3 volume intact or performs only an in-place upgrade, which does not produce a true native VMFS5 datastore with correct block sizes.
Installing ESXi and preserving the VMFS datastore keeps the existing VMFS3 volume unchanged, failing to meet the requirement of upgrading to VMFS5.
Choosing 'Install ESXi and overwrite the VMFS datastore' formats the disk with a fresh, natively created VMFS5 volume rather than performing an in-place upgrade of VMFS3. An in-place VMFS3-to-VMFS5 upgrade retains legacy 1 MB sub-block sizes and other VMFS3 characteristics, whereas a clean VMFS5 format uses the full native VMFS5 geometry. Because no virtual machines exist on the volume, there is no data loss risk from overwriting.
The ESXi 6.x installer workflow for an 'Upgrade ESXi' path does not offer an overwrite option for the VMFS datastore; the overwrite option is only presented in the fresh install path.
Concept tested: Fresh VMFS5 creation by overwriting VMFS3 during ESXi install
Source: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-CF4C3356-6C27-489B-A1F4-24F2BCC44BB6.html
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